{
  "paper": {
    "school": "Nan Hua Primary School",
    "year": 2025,
    "level": "P5",
    "label": "Weighted Assessment 1",
    "source_prefix": "Nan Hua 2025 P5 Weighted Assessment 1",
    "has_answer_key": true
  },
  "questions": [
    {
      "n": 1,
      "type_id": 1,
      "question": "Six million, fifty-two thousand and twenty in numerals is ____________.",
      "answer0": "6 005 220",
      "answer1": "6 052 220",
      "answer2": "6 052 020",
      "answer3": "6 520 020",
      "correct_answer": 2,
      "skill_id": 149,
      "difficulty_id": 1,
      "explanation": "Six million = 6 000 000; fifty-two thousand = 52 000; twenty = 20. Adding: 6 000 000 + 52 000 + 20 = 6 052 020. Answer: 6 052 020.",
      "hints": ["Write each part separately: 6 000 000, 52 000, 20.", "Add them, lining up the place values."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q1. Answer key: option 3 (6 052 020)."
    },
    {
      "n": 2,
      "type_id": 1,
      "question": "\\(5\\,782\\,390 = 5\\,000\\,000 + \\text{____________} + 90\\)<br>What is the missing number in the blank?",
      "answer0": "700 000",
      "answer1": "780 000",
      "answer2": "782 000",
      "answer3": "782 300",
      "correct_answer": 3,
      "skill_id": 149,
      "difficulty_id": 2,
      "explanation": "5 782 390 - 5 000 000 - 90 = 782 300. So the missing number is 782 300. Answer: 782 300.",
      "hints": ["Subtract the known parts (5 000 000 and 90) from 5 782 390.", "Check the expansion adds back to 5 782 390."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q2. Answer key: option 4 (782 300)."
    },
    {
      "n": 3,
      "type_id": 1,
      "question": "Find the value of \\(8 + 6 \\times 9 - 7\\).",
      "answer0": "20",
      "answer1": "28",
      "answer2": "55",
      "answer3": "119",
      "correct_answer": 2,
      "skill_id": 155,
      "difficulty_id": 1,
      "explanation": "Following order of operations, multiply first: \\(6 \\times 9 = 54\\). Then \\(8 + 54 - 7 = 55\\). Answer: 55.",
      "hints": ["Do the multiplication before the addition and subtraction.", "\\(8 + 54 - 7\\)."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q3. Answer key: option 3 (55)."
    },
    {
      "n": 4,
      "type_id": 1,
      "question": "Find the value of \\(7\\,200\\,000 \\div 1000\\).",
      "answer0": "720 000",
      "answer1": "72 000",
      "answer2": "7200",
      "answer3": "720",
      "correct_answer": 2,
      "skill_id": 151,
      "difficulty_id": 1,
      "explanation": "Dividing by 1000 moves every digit three places to the right (drops three zeros): \\(7\\,200\\,000 \\div 1000 = 7200\\). Answer: 7200.",
      "hints": ["Dividing by 1000 removes three zeros.", "7 200 000 -> 7200."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q4. Answer key: option 3 (7200)."
    },
    {
      "n": 5,
      "type_id": 1,
      "question": "Kai Wen had $100 at first. She bought 5 magazines which cost $16 each. She also bought a book which cost $4. Which expression represents how much she had left?",
      "answer0": "\\($100 - 5 \\times $16 - $4\\)",
      "answer1": "\\($100 - 5 \\times $16 + $4\\)",
      "answer2": "\\($100 + 5 \\times $16 - $4\\)",
      "answer3": "\\($100 + 5 \\times $16 + $4\\)",
      "correct_answer": 0,
      "skill_id": 155,
      "difficulty_id": 2,
      "explanation": "She spends \\(5 \\times $16\\) on magazines and another $4 on the book, both subtracted from $100. Money left = \\($100 - 5 \\times $16 - $4\\). Answer: option 1.",
      "hints": ["Both the magazines and the book are spent, so both are subtracted.", "Magazines cost 5 \\(\\times\\) $16."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q5. Choose-the-expression. Answer key: option 1."
    },
    {
      "n": 6,
      "type_id": 1,
      "question": "A strip of wire of length 2 m is divided into 8 equal parts. What is the length of each part?",
      "answer0": "0.25 m",
      "answer1": "0.4 m",
      "answer2": "2.5 m",
      "answer3": "4 m",
      "correct_answer": 0,
      "skill_id": 166,
      "difficulty_id": 1,
      "explanation": "Each part = \\(2 \\div 8 = 0.25\\) m. Answer: 0.25 m.",
      "hints": ["Divide the total length 2 m by 8.", "\\(2 \\div 8 = 0.25\\)."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q6",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q6. The strip diagram only illustrates 8 equal parts; the values are in the text, so no image is needed. Answer key: option 1 (0.25 m)."
    },
    {
      "n": 7,
      "type_id": 1,
      "question": "Find the value of \\(27 \\div 8\\). Express the answer as a mixed number in its simplest form.",
      "answer0": "\\(3\\dfrac{3}{8}\\)",
      "answer1": "\\(3\\dfrac{1}{8}\\)",
      "answer2": "\\(2\\dfrac{3}{8}\\)",
      "answer3": "\\(3\\dfrac{1}{4}\\)",
      "correct_answer": 0,
      "skill_id": 157,
      "difficulty_id": 1,
      "explanation": "\\(27 \\div 8 = \\dfrac{27}{8}\\). Since \\(8 \\times 3 = 24\\) with remainder 3, \\(\\dfrac{27}{8} = 3\\dfrac{3}{8}\\). Answer: \\(3\\dfrac{3}{8}\\).",
      "hints": ["Divide 27 by 8 to get a whole-number part and a remainder.", "Remainder over 8 gives the fraction part."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q7(a). Mixed-number answer -> MCQ. Answer key: 3 3/8."
    },
    {
      "n": 8,
      "type_id": 1,
      "question": "Find the value of \\(3 \\div 12\\). Express the answer as a fraction in its simplest form.",
      "answer0": "\\(\\dfrac{1}{4}\\)",
      "answer1": "\\(\\dfrac{3}{12}\\)",
      "answer2": "\\(\\dfrac{1}{3}\\)",
      "answer3": "\\(\\dfrac{1}{6}\\)",
      "correct_answer": 0,
      "skill_id": 157,
      "difficulty_id": 1,
      "explanation": "\\(3 \\div 12 = \\dfrac{3}{12}\\). Divide numerator and denominator by 3: \\(\\dfrac{1}{4}\\). Answer: \\(\\dfrac{1}{4}\\).",
      "hints": ["Write the division as a fraction \\(\\dfrac{3}{12}\\).", "Simplify by dividing top and bottom by 3."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q7",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q7(b). Fraction answer -> MCQ. Answer key: 1/4."
    },
    {
      "n": 9,
      "type_id": 2,
      "question": "Express \\(\\dfrac{19}{3}\\) as a decimal, correct to 1 decimal place.<br>Ans: [?]",
      "answer0": "6.3",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 158,
      "difficulty_id": 2,
      "explanation": "\\(19 \\div 3 = 6.333...\\) Rounded to 1 decimal place gives 6.3. Answer: 6.3.",
      "hints": ["Divide 19 by 3.", "Round 6.333... to one decimal place."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q8(a). Decimal answer -> FIB. Answer key: 6.3."
    },
    {
      "n": 10,
      "type_id": 2,
      "question": "Express \\(\\dfrac{3}{8}\\) as a decimal, correct to 2 decimal places.<br>Ans: [?]",
      "answer0": "0.38",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 158,
      "difficulty_id": 2,
      "explanation": "\\(3 \\div 8 = 0.375\\). Rounded to 2 decimal places gives 0.38. Answer: 0.38.",
      "hints": ["Divide 3 by 8 to get 0.375.", "Round to two decimal places."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q8",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q8(b). Decimal answer -> FIB. Answer key: 0.38."
    },
    {
      "n": 11,
      "type_id": 1,
      "question": "5 pizzas were shared equally among 4 children. What fraction of the pizza did each child get? Express your answer as a fraction or mixed number in its simplest form.",
      "answer0": "\\(1\\dfrac{1}{4}\\)",
      "answer1": "\\(\\dfrac{4}{5}\\)",
      "answer2": "\\(\\dfrac{5}{4}\\)",
      "answer3": "\\(1\\dfrac{1}{5}\\)",
      "correct_answer": 0,
      "skill_id": 157,
      "difficulty_id": 1,
      "explanation": "Each child gets \\(5 \\div 4 = \\dfrac{5}{4} = 1\\dfrac{1}{4}\\) pizzas. Answer: \\(1\\dfrac{1}{4}\\).",
      "hints": ["Divide 5 pizzas by 4 children: \\(\\dfrac{5}{4}\\).", "Convert the improper fraction to a mixed number."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q9",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q9. Mixed-number answer -> MCQ. Answer key: 5/4 = 1 1/4."
    },
    {
      "n": 12,
      "type_id": 2,
      "question": "Mary bought \\(\\dfrac{3}{10}\\) kg of flour and \\(\\dfrac{2}{5}\\) kg of sugar to bake cookies. How much flour and sugar did she buy altogether? Express your answer as a decimal.<br>Ans: [?] kg",
      "answer0": "0.7",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 159,
      "difficulty_id": 2,
      "explanation": "\\(\\dfrac{3}{10} + \\dfrac{2}{5} = \\dfrac{3}{10} + \\dfrac{4}{10} = \\dfrac{7}{10} = 0.7\\) kg. Answer: 0.7 kg.",
      "hints": ["Make the denominators the same: \\(\\dfrac{2}{5} = \\dfrac{4}{10}\\).", "Add the like fractions, then write as a decimal."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P1 Q10",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 1 Q10. Asked for a decimal answer -> FIB. Answer key: 0.7 kg."
    },
    {
      "n": 13,
      "type_id": 2,
      "question": "The table shows the prices of the admission tickets to the Universal Studios.<br>Adult: Mon-Fri $74, Sat & Sun $83<br>Child: Mon-Fri $59, Sat & Sun $62<br>Special Family bundle for 2 Adults and 2 Children: Mon-Fri $240, Sat & Sun $280<br>Express Pass: $120 each<br>A family of 4 adults and 3 children went to the Universal Studios on Saturday. They also bought 4 Express Pass tickets. What was the least possible amount of money they had to pay to go to the Universal Studios?<br>Ans: $[?]",
      "answer0": "988",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 3,
      "explanation": "Use the Sat/Sun prices. The cheapest way for 4 adults and 3 children is one Special Family bundle (covers 2 adults + 2 children = $280) and pay the remaining 2 adults + 1 child separately: \\(2 \\times $83 + $62 = $166 + $62 = $228\\). Tickets total = \\($280 + $228 = $508\\). Add 4 Express Passes: \\($120 \\times 4 = $480\\). Total = \\($508 + $480 = $988\\). Answer: $988.",
      "hints": ["Use the family bundle for 2 adults + 2 children, then add the remaining 2 adults and 1 child at weekend rates.", "Add the 4 Express Passes at $120 each."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P2 Q1",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 2 Q1 [3 marks]. Price table transcribed into the stem so no image is needed. Integer/money answer -> FIB. Answer key: $988."
    },
    {
      "n": 14,
      "type_id": 2,
      "question": "Mdm Fatimah bought 16 bags. She paid $150 for each bag. With the same amount of money, she could buy 24 identical blouses. What would be the price of two blouses?<br>Ans: $[?]",
      "answer0": "200",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 2,
      "explanation": "Total money = \\(16 \\times $150 = $2400\\). Price of 1 blouse = \\($2400 \\div 24 = $100\\). Price of 2 blouses = \\($100 \\times 2 = $200\\). Answer: $200.",
      "hints": ["Find the total money: 16 \\(\\times\\) $150.", "Divide by 24 for one blouse, then multiply by 2."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P2 Q2",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 2 Q2 [3 marks]. Integer/money answer -> FIB. Answer key: $200."
    },
    {
      "n": 15,
      "type_id": 2,
      "question": "Carl is 11 years old and James is 17 years old. How many years ago was James 3 times as old as Carl?<br>Ans: [?]",
      "answer0": "8",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 3,
      "explanation": "The age difference is always \\(17 - 11 = 6\\) years. When James was 3 times Carl's age, James was 3 units and Carl 1 unit, so the difference of 6 equals 2 units; 1 unit = \\(6 \\div 2 = 3\\). So Carl was 3 years old, which was \\(11 - 3 = 8\\) years ago. Answer: 8 years.",
      "hints": ["The age gap stays at 6 years.", "When James is 3 times Carl, the gap is 2 units = 6, so Carl was 3; that was 11 - 3 years ago."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P2 Q3",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 2 Q3 [3 marks]. Integer answer -> FIB. Answer key working: 17-11=6, 2u=6, 1u=3, 11-3=8 years ago."
    },
    {
      "n": 16,
      "type_id": 2,
      "question": "John had $260 more than Ali. Ravi had 4 times as much money as John. After Ali spent $60, John had 3 times as much as what Ali had left. How much money did Ravi have?<br>Ans: $[?]",
      "answer0": "1920",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 3,
      "explanation": "After Ali spent $60, John = $260 more than Ali's original = $260 + ($60 + Ali's left). Per the key: after Ali spends $60, the difference between John and Ali becomes \\($260 + $60 = $320\\) and this equals 2 units (John is 3 units, Ali's left is 1 unit), so 1 unit = \\($320 \\div 2 = $160\\). John = 3 units = \\($160 + $320 = $480\\). Ravi = \\(4 \\times $480 = $1920\\). Answer: $1920.",
      "hints": ["After Ali spends $60, John exceeds Ali's remaining amount by $320.", "That $320 is 2 units; find 1 unit, then John, then Ravi = 4 \\(\\times\\) John."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P2 Q4",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 2 Q4 [4 marks]. Integer/money answer -> FIB. Answer key working: 2u=$260+$60=$320, 1u=$160, J=$480, R=$480x4=$1920."
    },
    {
      "n": 17,
      "type_id": 2,
      "question": "Mrs Ang and Mrs Chan had an equal number of stickers at first. After Mrs Ang used 356 stickers and Mrs Chan used 86 stickers, Mrs Chan had 4 times as many stickers as Mrs Ang. How many stickers did each of them have at first?<br>Ans: [?]",
      "answer0": "446",
      "answer1": null,
      "answer2": null,
      "answer3": null,
      "correct_answer": null,
      "skill_id": 152,
      "difficulty_id": 3,
      "explanation": "Both started equal. The difference between what they used is \\(356 - 86 = 270\\), which is the difference between their remaining amounts. Mrs Chan's remaining = 4 units, Mrs Ang's remaining = 1 unit, so the difference is 3 units = 270, giving 1 unit = \\(270 \\div 3 = 90\\). Mrs Ang had 1 unit left, so her start = \\(90 + 356 = 446\\). Each had 446 stickers at first. Answer: 446.",
      "hints": ["The gap created by using 356 vs 86 is 270 stickers = 3 units.", "1 unit = 90 (Mrs Ang's remaining); add back the 356 she used."],
      "source": "Nan Hua 2025 P5 Weighted Assessment 1 P2 Q5",
      "image_needed": false,
      "image_options": false,
      "image_file": null,
      "image_page": null,
      "image_bbox": null,
      "notes": "Paper 2 Q5 [3 marks]. Integer answer -> FIB. Answer key working: 3u=356-86=270, 1u=90, start=90+356=446."
    }
  ]
}